I got a tip from a friend here on the registry to go with the spicer differentials from dennys driveshafts. Not sure if they are the ones you recomended but Here is the link for the half shaft u joints i ordered. I also bought the drive shaft u joints too and parts are on their way. I also bought a poly bushing kit for the car and that is on the way too.
http://www.dennysdriveshaft.com/p443...build_kit.html
It is somewhat comforting that my car isn't the only one having this issue. keep me posted on your situation.
So far, I have only gotten the exhaust out of the way. I pulled the bottom differential bolt last night thinking that would drain the fluid from the diff but it didn't. I am thinking since I have C4 beam plates ready to go in, a bushing kit on the way, and a spare 3.45 geared Dana 44 ready to go, I am going to pull the bat wing out today and split the differential case and have a look today. Thats a little ambitious, don't know if I will get that far but I will keep you guys posted.
Chris